view this issue? >> i think i'd like to say three things. one, we should restrain, both of us, china and japan, and that's what we're doing. second, we should abide by the international laws and norms. we should not resort to use of force. third, i appreciate very much that u.s. is saying repeatedly that japan-u.s. security treaty, specifically article 5, covers the island because that constitutes an important deter republicans. >> we're seeing chinese leaders have been more authorititive in asia. how should officials in china and japan respond to that? >> china is an important partner and we should continue to engage china. however we would like to see them abide by international laws, norms and rules. i think we should continue to send that message to china.